Refrigeration system with modulated condensing loops

Refrigeration – Automatic control – Diverse – cascade or compound refrigeration-producing system

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C062S335000

Reissue Patent

active

11061085

ABSTRACT:
A refrigeration system having a main refrigeration circuit having a condensing stage, wherein a first refrigerant in a high pressure gas state is condensed at least partially to a liquid state. The condensing stage has adelete-start id="DEL-S-00001" date="20071127" ?pair ofdelete-end id="DEL-S-00001" ?stand-alone condensing stage closed loopdelete-start id="DEL-S-00002" date="20071127" ?sdelete-end id="DEL-S-00002" ?in heat exchange relation with the main refrigeration circuit. The stand-alone condensing stage closed loopdelete-start id="DEL-S-00003" date="20071127" ?s aredelete-end id="DEL-S-00003" ?insert-start id="INS-S-00001" date="20071127" ?is ininsert-end id="INS-S-00001" ?paralleldelete-start id="DEL-S-00004" date="20071127" ?one to anotherdelete-end id="DEL-S-00004" ?insert-start id="INS-S-00002" date="20071127" ?with a condenser of the condensing stageinsert-end id="INS-S-00002" ?anddelete-start id="DEL-S-00005" date="20071127" ?each comprisedelete-end id="DEL-S-00005" ?insert-start id="INS-S-00003" date="20071127" ?comprisesinsert-end id="INS-S-00003" ?a second refrigerant circulating between at least a heat absorption stage, wherein the second refrigerant absorbs heat from the first refrigerant in the main refrigeration circuit so as to condense the first refrigerant to the liquid state, and a heat release stage, wherein the second refrigerant releases the absorbed heat. The condensing stage has modulating valves for selectively and quantitatively modulating the temperature of said first refrigerant and compressor head pressure.

REFERENCES:
patent: 4437317 (1984-03-01), Ibrahim
patent: 5070704 (1991-12-01), Conry
patent: 5335508 (1994-08-01), Tippmann
patent: 5673567 (1997-10-01), Dube
patent: 5826433 (1998-10-01), Dube
patent: 6089033 (2000-07-01), Dube
patent: 6216481 (2001-04-01), Kantchev
patent: 6983613 (2006-01-01), Dube
patent: 2001/0023594 (2001-09-01), Ives

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